1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #include "curl_setup.h"
25 #ifdef HAVE_NETINET_IN_H
26 # include <netinet/in.h>
28 #ifdef HAVE_ARPA_INET_H
29 # include <arpa/inet.h>
34 #ifdef HAVE_SYS_IOCTL_H
35 # include <sys/ioctl.h>
40 #ifdef HAVE_SYS_SOCKIO_H
41 # include <sys/sockio.h>
53 #include "inet_ntop.h"
57 #define _MPRINTF_REPLACE /* use our functions only */
58 #include <curl/mprintf.h>
60 #include "curl_memory.h"
61 /* The last #include file should be: */
64 /* ------------------------------------------------------------------ */
66 #if defined(HAVE_GETIFADDRS)
68 bool Curl_if_is_interface_name(const char *interf)
72 struct ifaddrs *iface, *head;
74 if(getifaddrs(&head) >= 0) {
75 for(iface=head; iface != NULL; iface=iface->ifa_next) {
76 if(curl_strequal(iface->ifa_name, interf)) {
86 if2ip_result_t Curl_if2ip(int af, unsigned int remote_scope,
87 const char *interf, char *buf, int buf_size)
89 struct ifaddrs *iface, *head;
90 if2ip_result_t res = IF2IP_NOT_FOUND;
92 if(getifaddrs(&head) >= 0) {
93 for(iface=head; iface != NULL; iface=iface->ifa_next) {
94 if(iface->ifa_addr != NULL) {
95 if(iface->ifa_addr->sa_family == af) {
96 if(curl_strequal(iface->ifa_name, interf)) {
103 unsigned int scopeid = 0;
104 addr = &((struct sockaddr_in6 *)iface->ifa_addr)->sin6_addr;
105 #ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
106 /* Include the scope of this interface as part of the address */
108 ((struct sockaddr_in6 *)iface->ifa_addr)->sin6_scope_id;
110 if(scopeid != remote_scope) {
111 /* We are interested only in interface addresses whose
112 scope ID matches the remote address we want to
113 connect to: global (0) for global, link-local for
114 link-local, etc... */
115 if(res == IF2IP_NOT_FOUND) res = IF2IP_AF_NOT_SUPPORTED;
119 snprintf(scope, sizeof(scope), "%%%u", scopeid);
123 addr = &((struct sockaddr_in *)iface->ifa_addr)->sin_addr;
125 ip = (char *) Curl_inet_ntop(af, addr, ipstr, sizeof(ipstr));
126 snprintf(buf, buf_size, "%s%s", ip, scope);
130 else if((res == IF2IP_NOT_FOUND) &&
131 curl_strequal(iface->ifa_name, interf)) {
132 res = IF2IP_AF_NOT_SUPPORTED;
141 #elif defined(HAVE_IOCTL_SIOCGIFADDR)
143 bool Curl_if_is_interface_name(const char *interf)
145 /* This is here just to support the old interfaces */
148 return (Curl_if2ip(AF_INET, 0, interf, buf, sizeof(buf)) ==
149 IF2IP_NOT_FOUND) ? FALSE : TRUE;
152 if2ip_result_t Curl_if2ip(int af, unsigned int remote_scope,
153 const char *interf, char *buf, int buf_size)
157 struct sockaddr_in *s;
161 if(!interf || (af != AF_INET))
162 return IF2IP_NOT_FOUND;
164 len = strlen(interf);
165 if(len >= sizeof(req.ifr_name))
166 return IF2IP_NOT_FOUND;
168 dummy = socket(AF_INET, SOCK_STREAM, 0);
169 if(CURL_SOCKET_BAD == dummy)
170 return IF2IP_NOT_FOUND;
172 memset(&req, 0, sizeof(req));
173 memcpy(req.ifr_name, interf, len+1);
174 req.ifr_addr.sa_family = AF_INET;
176 if(ioctl(dummy, SIOCGIFADDR, &req) < 0) {
178 /* With SIOCGIFADDR, we cannot tell the difference between an interface
179 that does not exist and an interface that has no address of the
180 correct family. Assume the interface does not exist */
181 return IF2IP_NOT_FOUND;
184 s = (struct sockaddr_in *)&req.ifr_addr;
185 memcpy(&in, &s->sin_addr, sizeof(in));
186 Curl_inet_ntop(s->sin_family, &in, buf, buf_size);
194 bool Curl_if_is_interface_name(const char *interf)
201 if2ip_result_t Curl_if2ip(int af, unsigned int remote_scope,
202 const char *interf, char *buf, int buf_size)
208 return IF2IP_NOT_FOUND;